Air Vent Roof Mount Metal Vent with Thermostat (1170 CFM, Black) 1170 CFM Black
Adequate soffit venting must be installed for best performance. Moisture buildup is also a problem in the attic. A solution is a power attic ventilator featuring a combination thermostat/humidistat.
Gable-mounted power vents are an excellent option for tile roof ventilation. Commemorate, the higher the CFM the more air exchanges per hour. Roof-mount power vents are ideal for hip roofs.
30% more for roofs 11/12 and higher. Note: for roofs 7/12 or higher, you may want to add 20% more CFM capacity to handle the larger volume of attic space; Power vents are rated by CFM.
Look for a power vent that provides at least the minimum CFM requirement. Raised dome for greater airflow and easier flashing. Plastic screen has distinct advantages over metal: it won't corrode or rust, and it won't vibrate or create noise.
For proper attic ventilation, the Home Ventilation Institute recommends a system that provides at least 10 air exchanges an hour. Thermal overload protection -- an important safety feature that shuts off motor if fan overheats. It's an effective option to replace wind turbines or roof pots already in place.
One power attic ventilator is usually sufficient, unless it's a very large attic. Cartesian product DESCRIPTION Size Name:1170 CFM| Color:BlackThea Air Vent Roof Mount Attic Vent with Humidistat/Thermostat consist of electric-powered attic vents use a thermostat to fight heat and a humidistat ("Plus" models only) to help prevent moisture buildup inside the attic. If using gable vents, gable vents must be installed on the down-wind end of the home.
To determine the fan capacity needed to provide this minimum airflow, use the following formula: attic square feet x 0.7 = CFM (cubic feet of air moved per minute).
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